204 Mr. D. G. Elliot on an apparently new Eurystomus. 



of the deep blue which pervades the entire plumage of Mr. Gray's 

 species. From -E. crassirostris, to which it is more nearly allied, 

 it may at all times be distinguished by its blue wings, and the 

 prevalence of blue upon the back, both of these parts in the 

 Solomon Island species being green. The central tail-feathers 

 of E. crassirostris are brown (1 describe from Mr. Sclater's type 

 now lying before me), those of E. waigiouensis are black with 

 a purple gloss. Mr. Wallace, who procured the type specimen, 

 has others in his collection precisely similar, some of which I 

 have examined ; and he informs me that he only procured this 

 Roller in the island of Waigiou, to which it seems restricted. I 

 have therefore deemed the name of waigiouensis not an inap- 

 propriate one for the species. 



I am acquainted with the following species of the genus 

 Eurystomus. 



1. Eurystomus orientalis. 



Hub. India, Ceylon, Malacca, Lombock, China. 



2. Eurystomus pacificus. 



Hab. New South Wales, Van Diemen's Land, Aru, New 

 Guinea. 



3. Eurystomus azureus. 

 Hab. Island of Batchian. 



4. Eurystomus waigiouensis. 

 Hab. Island of Waigiou. 



5. Eurystomus crassirostris. 

 Hab. Solomon Islands. 



6. Eurystomus glaucurus. 



7. Eurystomus afer. 



Hab. Eastern and Western Africa. 



8. Eurystomus gularis. 

 Hab. West Africa. 



